If an applicant appeals under paragraph (1)(B), the President, within four months after receiving the appeal, shall decide whether to approve or deny the application. The President shall approve the application if he finds, after consideration of the factors set forth in
section 3164(g)(2) of this title, that such approval would be in the public interest and that (1) such system would be compatible with the purposes for which the unit was established; and (2) there is no economically feasible and prudent alternative route for the system. In making a decision, the President shall consider any environmental impact statement prepared pursuant to
section 3164(e) of this title, comments of the public and Federal agencies received during the preparation of such statement, and the findings and recommendations, if any, of each Federal agency that rendered a decision with respect to the application. The President’s decision to approve or deny the application shall be published in the Federal Register, together with a statement of the reasons for his determination.